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Your search keyword '"Boersema, Jeffrey L."' showing total 2 results
Start Over Author "Boersema, Jeffrey L." Topic mathematical symmetry
2 results on '"Boersema, Jeffrey L."'

1. K-theory for real C*-algebras via unitary elements with symmetries.

Author

Boersema, Jeffrey L. and Loring, Terry A.

Subjects
*K-theory, *MATHEMATICAL symmetry, *UNITARY groups, *EXPONENTIAL functions
Abstract

We prove that all eight KO groups for a real C*-algebra can be constructed from homotopy classes of unitary matrices that respect a variety of symmetries. In this manifestation of the KO groups, all eight boudary maps in the 24-term exact sequences associated to an ideal in a real C*-algebra can be computed as exponential or index maps with formulas that are nearly identical to the complex case. [ABSTRACT FROM AUTHOR]

Published
2016

2. ANTISYMMETRIES OF THE CAR ALGEBRA.

Author

STACEY, P. J., BOERSEMA, JEFFREY L., and CHRISTOPHER PHILLIPS, N.

Subjects
*OPERATOR algebras, *MATHEMATICAL symmetry, *MATRICES (Mathematics), *HILBERT space, *ISOMORPHISM (Mathematics), *CONJUGACY classes, *K-theory, *MULTIPLICATION
Abstract

Let A be a uniformly hyperfinite C*-algebra with infinitely many 2 × 2 matrix factors. It is shown that, up to conjugacy, there is a unique antisymmetry (involutory 8-antiautomorphism) of A. [ABSTRACT FROM AUTHOR]

Published
2011
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